He may be including AO timer too thus making it 21 min from AO to Capture Town.
This isn't fun in my opinion, creating footholds or guarding cps are next to impossible since without tables forcing the capper to certain area, they can merely hide just inside the door and force the guard to come to them.
The captures feel meaningless, we took Antwerp and Brussels within 12hrs of the campaign start. And I literally just ran through and captured 3 cps in Namur and by the 3rd ones end they already recapped the 1st and soon after the 2nd. Its just way to chaotic, especially with how hardy frus are now and such